Vlv2TbltDevicePkg/PpmPolicy/PpmPolicy.c

   1 /**
   2   Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>
   3   This program and the accompanying materials
   4   are licensed and made available under the terms and conditions of the BSD License
   5   which accompanies this distribution.  The full text of the license may be found at
   6   http://opensource.org/licenses/bsd-license.php
   7
   8   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   9   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  10
  11
  12 Module Name:
  13
  14
  15   PpmPolicy.c
  16
  17 Abstract:
  18
  19   This file is a wrapper for Intel PPM Platform Policy driver.
  20   Get Setup Value to initilize Intel PPM DXE Platform Policy.
  21
  22 --*/
  23 #include "PpmPolicy.h"
  24 #include <Protocol/MpService.h>
  25 #include <Library/BaseLib.h>
  26 #include <Library/DebugLib.h>
  27 #include <Library/CpuIA32.h>
  28
  29 #include <PchRegs.h>
  30 #include <Library/PchPlatformLib.h>
  31
  32 #define EFI_CPUID_FAMILY                      0x0F00
  33 #define EFI_CPUID_MODEL                       0x00F0
  34 #define EFI_CPUID_STEPPING                    0x000F
  35
  36 EFI_STATUS
  37 EFIAPI
  38 PpmPolicyEntry(
  39   IN EFI_HANDLE ImageHandle,
  40   IN EFI_SYSTEM_TABLE *SystemTable
  41 )
  42 {
  43   EFI_BOOT_SERVICES        *pBS;
  44   EFI_MP_SERVICES_PROTOCOL *MpService;
  45   EFI_CPUID_REGISTER        Cpuid01 = { 0, 0, 0, 0};
  46   EFI_HANDLE                Handle;
  47   EFI_STATUS                Status;
  48   UINTN                     CpuCount;
  49   UINT64                    MaxRatio;
  50   UINT8                     CPUMobileFeature;
  51
  52   PCH_STEPPING              Stepping;
  53
  54   pBS = SystemTable->BootServices;
  55
  56   //
  57   // Set PPM policy structure to known value
  58   //
  59   pBS->SetMem (&mDxePlatformPpmPolicy, sizeof(PPM_PLATFORM_POLICY_PROTOCOL), 0);
  60
  61   //
  62   // Find the MpService Protocol
  63   //
  64   Status = pBS->LocateProtocol (&gEfiMpServiceProtocolGuid,
  65                                 NULL,
  66                                 (void **)&MpService
  67                                );
  68   ASSERT_EFI_ERROR (Status);
  69
  70   //
  71   // Get processor count from MP service.
  72   //
  73   Status = MpService->GetNumberOfProcessors (MpService, &CpuCount, NULL);
  74   ASSERT_EFI_ERROR (Status);
  75
  76   //
  77   // Store the CPUID for use by SETUP items.
  78   //
  79   AsmCpuid (EFI_CPUID_VERSION_INFO, &Cpuid01.RegEax, &Cpuid01.RegEbx, &Cpuid01.RegEcx, &Cpuid01.RegEdx);
  80   MaxRatio = ((RShiftU64 (AsmReadMsr64(EFI_MSR_IA32_PLATFORM_ID), 8)) & 0x1F);
  81
  82
  83   mDxePlatformPpmPolicy.Revision                       = PPM_PLATFORM_POLICY_PROTOCOL_REVISION_4;
  84
  85   //Read CPU Mobile feature from PLATFORM_ID_MSR MSR(0x17) NOTFB_I_AM_NOT_MOBILE_FUSE_CLIAMC00H Bit 28
  86   //Bit Description: { Disables Mobile features 0 = I am NOT a mobile part 1 = I am a mobile part (default)"}
  87   CPUMobileFeature = ((RShiftU64 (AsmReadMsr64(EFI_MSR_IA32_PLATFORM_ID), 28)) & 0x1);
  88
  89   if (!EFI_ERROR(Status)) {
  90     if (CPUMobileFeature == 1){//CPU mobile feature
  91       mDxePlatformPpmPolicy.FunctionEnables.EnableGv       = ICH_DEVICE_ENABLE;
  92       mDxePlatformPpmPolicy.FunctionEnables.EnableCx       = ICH_DEVICE_ENABLE;
  93       mDxePlatformPpmPolicy.FunctionEnables.EnableCxe      = ICH_DEVICE_DISABLE;
  94       mDxePlatformPpmPolicy.FunctionEnables.EnableTm       = ICH_DEVICE_ENABLE;
  95       //MaxC7
  96       mDxePlatformPpmPolicy.FunctionEnables.EnableC7       = ICH_DEVICE_ENABLE;
  97       mDxePlatformPpmPolicy.FunctionEnables.EnableC6       = ICH_DEVICE_ENABLE;
  98       mDxePlatformPpmPolicy.FunctionEnables.EnableC4       = ICH_DEVICE_ENABLE;
  99
 100
 101     }else{//CPU desktop feature
 102        mDxePlatformPpmPolicy.FunctionEnables.EnableGv       = ICH_DEVICE_DISABLE;
 103        mDxePlatformPpmPolicy.FunctionEnables.EnableCx       = ICH_DEVICE_DISABLE;
 104        mDxePlatformPpmPolicy.FunctionEnables.EnableCxe      = ICH_DEVICE_DISABLE;
 105        mDxePlatformPpmPolicy.FunctionEnables.EnableTm       = ICH_DEVICE_DISABLE;
 106        mDxePlatformPpmPolicy.FunctionEnables.EnableC4       = ICH_DEVICE_DISABLE;
 107        mDxePlatformPpmPolicy.FunctionEnables.EnableC6       = ICH_DEVICE_DISABLE;
 108        mDxePlatformPpmPolicy.FunctionEnables.EnableC7       = ICH_DEVICE_DISABLE;
 109     }
 110
 111
 112     mDxePlatformPpmPolicy.FunctionEnables.EnableProcHot  = ICH_DEVICE_ENABLE;
 113     mDxePlatformPpmPolicy.FunctionEnables.TStatesEnable  = ICH_DEVICE_ENABLE;
 114
 115
 116     Stepping = PchStepping();
 117     if (Stepping < PchB3) {
 118       // If SoC is B0~B2 Stepping, disable the Turbo
 119       mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_DISABLE;
 120     } else {
 121       mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_ENABLE;
 122     }
 123
 124     mDxePlatformPpmPolicy.FunctionEnables.EnableTm      = ICH_DEVICE_ENABLE;
 125
 126     mDxePlatformPpmPolicy.FunctionEnables.EnableCMP      = ICH_DEVICE_ENABLE;
 127
 128   } else {
 129     mDxePlatformPpmPolicy.FunctionEnables.EnableGv       = ICH_DEVICE_ENABLE;
 130     mDxePlatformPpmPolicy.FunctionEnables.EnableCx       = ICH_DEVICE_ENABLE;
 131     mDxePlatformPpmPolicy.FunctionEnables.EnableCxe      = ICH_DEVICE_ENABLE;
 132     mDxePlatformPpmPolicy.FunctionEnables.EnableTm      = ICH_DEVICE_ENABLE;
 133     mDxePlatformPpmPolicy.FunctionEnables.EnableProcHot  = ICH_DEVICE_ENABLE;
 134     mDxePlatformPpmPolicy.FunctionEnables.EnableCMP       = ICH_DEVICE_DISABLE;
 135     mDxePlatformPpmPolicy.FunctionEnables.TStatesEnable  = ICH_DEVICE_ENABLE;
 136     mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_ENABLE;
 137     mDxePlatformPpmPolicy.FunctionEnables.EnableC4       = ICH_DEVICE_ENABLE;
 138     mDxePlatformPpmPolicy.FunctionEnables.EnableC6       = ICH_DEVICE_ENABLE;
 139   }
 140
 141
 142
 143   mDxePlatformPpmPolicy.S3RestoreMsrSwSmiNumber                       = S3_RESTORE_MSR_SW_SMI;
 144
 145   Handle = NULL;
 146   Status = pBS->InstallMultipleProtocolInterfaces (
 147                                                   &Handle,
 148                                                   &gPpmPlatformPolicyProtocolGuid,
 149                                                   &mDxePlatformPpmPolicy,
 150                                                   NULL
 151                                                   );
 152
 153   ASSERT_EFI_ERROR (Status);
 154
 155   return EFI_SUCCESS;
 156 }